Stop and check valve



R. A. HER

STOP AND CHECK VALVE Filed Sept. 29. 192] f-Lgjigfi- 34 ll 7 Jvwenim. rTAl-iara Rub E application flied lteptember 22, 1921. serial No.

Toall whom it may concern:

Be it @own that l, Bonner A. PM a citizen of the United States, residing at Connersville, in the county of Fayette and State of lndiana, have invented certain new and useful Improvements in Stop and Check Valves, of which the following is a specification.

This .invention relates to im rovements in valve constructions, to provi e a structure capable of selectively acting as a stop or chec valve.

The primary object of the invention is the provision of a selectively operated stop or check valve of novel construction, and of such positive efi'eotiveness as to adapt the same for a variety of uses.

it further object of the invention is the provision of a valve construction embodymg the above mentioned features, the valve member thereof being particularly desi nod for efiective use as a check valve mem er; said valve construction including means for detachably engaging with said valve member, whereby said valve construction may be utilized as a stop valve.

@ther objects and advantages will be ap-' parent during the course of the following detailed description.

In the drawings, wherein similar reference characters designate corresponding parts throughout the several views.

till

Figure 1 is a cross sectional view through the improved valve construction, and show ing the valve member thereof held in open position.

Figure 2 is a cross sectional view taken throu h the improved valve construction, and s owing the valve member thereof in positive locked closed position.

Figure 3 is a plan view of a portion of the valve casing, and showing the interior construction of the valve seat.

Figure dis a side elevation of the improved type of valve member used in the valve construction.

In the drawing, wherein for the purpose of illustration is shown the preferred embodiment of my invention, the letter A des-. ignates a valve construction, including the valve casin%lB; valve member C, and control means The casing B preferably includes the body casing 10, the bonnet structure 11 and the cap 12. The body casing 10 is preferably of the globe t pe although the same may be of the ang e or cross types. It is provided with an entrance opening 13. and an axially all ing exit opening l-l. "One side of said b0 y casin 10 is provided with the internallv screw 1; readed portion 15, whereby access ma be had to the parti tion 16 WhlCh forms tiie valve seat interior- 1 of the casing 10, as is the case in orinary valve formation. The opening defined by projection 15 is of course provided for reception of the detachable cap 12. An internally screw threaded projecting portion 17 is provided in axial alignment with the portion 15, the same defining an openin m the casing 10, and which faces the si e of the artition l6, opposite to that side facing t e opening defined by the portion 15. The screw threaded portion 17 is provided for detachably receivin the bonnet structure 11, to be subsequent y described. The partition 16 is provided with a valve opening 20 axially aligning with the openings in projections 15 and 17, the wall of said circular opening 20 having spaced lugs 21 projecting inwardly thereof in pointed manner, to provide a plurality of substantially rectangular slots 22, of s1milar formation, and for cooperation with certain portions of the valve member C to be subsequently described.

A cap 12 is provided with the internally screw threaded shank 23 adapted for engaging in the aperture defined by the projection 15 of casing 10, said cap 12 having a socket depression 24 formed from the interior surface thereof and adapted for aligning axially with the opening 20, when said cap 12 is positioned upon casing 10.

The bonnet 11 of the valve structure A. is provided with the screw threaded shank 25, adapted for engagement in the opening defined by projection 17 of casing 10, and whereby said valve bonnet 11 may be detachably assembled to the valve construction. An axial opening 26 is provided centrally through the bonnet structure 11, said opening 26 being axially positioned with respect to the opening 20 of the valve casing 10. The opening 26 is internally screw threaded as at 27, inwardl from its inner face 28 and extending or substantially three quarters of the length of said 0 ening 26, said screw threads terminatlng s ort of the adjustable packing nut 29, which engages the screw threads upon the outer end 30 of the bonnet 11 whereby packing mnterial of any suitable composition 31 may be provided upon the outer end of the honnet 11 and intermediate the same and the packing nut 29. An annular bevelled seat 32 is provided u on the inner face 28 of the bonnet 11, wh1ch is disposed in said casing 10, when the bonnet 11 is connected thereto, said bevelled seat 32 flaring outwardly toward the face 28 and annularly about the opening 26.

The valve member C is of special construction and is preferably of the disc type, including the disc body portion 35. One flattened face 36 of the disc portion 35 is centrally provided with a plurality of connected ribs 37, extending in radial manner; said ribs 37 all extending for the same distance from the extended axis of the disc 35 and adapted for seating within the socket portion 24 of the cap member 12, when the valve is unseated. The opposite flat face 38 of the disc ortion 35 is provided upon the marginal ges thereof with spaced projecting guide lugs 39, having the extreme outer ends thereof bevelled as at 40. A reinforcing section of metal 41 is provided upon the face 38, and connecting the lugs 39 for reinforcing purposes. The disc portion 35 is provided with a bevelled seating surface 42, tapering inwardly toward the side 38 of the disc 35. and adapted for seating in the annular seat surrounding the opening 20 provided in the partition 16.

The valve member C is assembled from the opening provided by the projection 15 on the casing 10, the fingers or lugs 39 thereof being reciprocably disposed in the ways 22 provided by the projections 21 extending inwardly in the seat opening 20, and until the bevelled surface 42 of said valve member C engages the seat in the partition 16 surroundin the opening 20 as illustrated in F i re 2. he valve construction A is prefera ly adapted for use in a hanging position such as illustrated in Figure 2 Whereby the cap 12 is disposed upwardly, and the bonnet structure 11 depending as illustrated therein. In this position, the valve member C is of course normally operated by gravity, to seat itself upon the seat in the partition 16 of the casing 10. When the cap 12 is mounted, as above described, the ribs 37 of valve member C extend for reciproca- 66 tion within the socket 24 rovided therein. Thus, the valve member I is adapted for reciprocation within the opening in partition 16 and the cap 12, as can be readily seen from Figure 2. In this manner, the valve C provides-a check valve structure.

The regulating means D is provided when adapting the valve construction A for functioning as a stop valve. The same preferably includes a main step 45 externally screw threaded as at 46, upon one end there of, said screw threads being rovided for engaging the internal screw t eads 27 of the bonnet 11. The end of the stem 45 adjacent the screw threads 46, is provided with an enlarged bevelled head 48 adapted for seatin upon the bevelled surface 32 provided in the bonnet 11. The main stem 45, is provided upon the end opposite the head 48 with a reduced shank 49, adapted for receiving a hand wheel 50 to be detachabl mounted upon a shoulder of said reduce portion 49 by a detachable nut 51, which engages a screw threaded portion of this reduced portion 49. It can readily be seen that the detachable packing nut 29 and the packing material 31 as above described for use upon the bonnet structure 11, is in fact provided for engaging the smooth surface of the main stem 45, to provide a leak roof joint, whereby the main stem 45 can he advanced inwardly of the casing 10 in a manner to be subsequently set forth. The main stem 45 is hollowed, to provide the axial opening 53 extending longitudinally therethrough, the inner end of said opening 53 adjacent the enlarged head 48 being provided with the internally screw threaded socket portion 54.

An auxiliary stem 55 is provided for recifprocation within the bore or opening 53 o the main stem 45, and is provided upon the end thereof with screw threads 56 adapted for detachably engaging in the socket screw thread portion 54 of the main stem 45, whereby the auxiliary and main stems 55 and 45 respectively may be detachably clamped in locked position. A packing nut structure 59 is provided upon the reduced screw threaded portion 49 of stem 45 and adapted to have the packing material thereof engage the auxilia stem 55, to provide a leak proof joint. The extreme outer or external end of the stem 55 is provided with a hand wheel 60, demchably maintained thereon as by the means 61.

In operation, when desiring to use the improved valve structure Aas a check valve, the screw threaded portion 56 of the auxiliary stem 55 is threaded into the socket 54 provided in the main stem 45, and whereby the main and auxiliary stems are locked together as illustrated in Figure 1. In this position, liquid or other material in the valve aatava structure is revented m seeping past the screw threa ed portion 541, to a at extent, the packing nut structure 59 preventing further loss of material to be conveyed in the valve construction A. The main stem 45 is adjusted, in such manner that the bevelled headed portion 48 thereof is seated in the bevelled portion 32 of the bonnet 11, substantially as described above, whereby a leak proof connection is provided as to the main and auxiliary stems of the control means D. In this sition, the valve member C normally rests upon the seat in the artition 16, as above descrimd. As the fluid in the valve structure A enters the entrance opening 13, the same lifts the valve member 0, guided upwardly and against relative rotation in its t, whereby said fluid may exit through the oing it and be prevented from returning, due to back pressure upon the valve member C, and likewise to the fact that the same is operated by gravity to normally seat itself upon the seatv in the partition 16. A

When desiring to lock the valve memr C upon its seat to revent passage of material through the va ve structure the screw threaded portion 56 of the auxiliary stem is adjusted into the screw thread socket provided inwardly of the reinforcinportion 41 and face 38 of valve member thus locking the auxiliary stem 55 andvalve member C together for reciprocation. As the main stem 45 is rotated in its seat in the Mnnet 11 until the enlarged head portion 48 is seated on the bevelled surface 32, the packing nut 59 thereof, engages the hand wheel 60 of the auxiliary stem 55, thus locking the auxiliary stem 55 against an inward reciprocation and holding the valve member C securely upon its seat as can be readily seen.

When desiring to lift the valve member C ofl' its seat, it is merely necessary to rotate the main stem 45 in the bonnet 11, until the enlarged end 48 thereof engages the reinforcing portion 41 of the valve (3, and whereby said valve member C maybe lifted 0d of its seat to permit free ssage of any material through the valve construction A.

lit can thus be seen that a device has been provided, in which parts thereof cooperate in efi'ective manner to permit the valve structure to function as a check valve or a stop valve. The valve member C is particularly designed to cooperate with the valve construction in overcomin dificulties, which naturally arise in provi 'ng a combination valve of the type w The main and auxiliary stems A5 and 55, are of course susceptible of relative adjustment to adapt the valve member C for a variety of uses, which will be obvious to one skilled in the art to which this invention perta.

Various changes in theshape, size and arbe made to the rangement of parts ma form of the invention erein shown and described, without de arting from the spirit of the invention or t e scope of the claims.

ll claim:

l. A valve construction comprising a casing provided with an annular valve seat therein, projections extending into the opening surrounded by said seat and formin guide ways, and a valve member adapt or cooperation upon said valve seat, said valve member having lugs projecting therefrom for reciprocation within the guide ways of said seat for guide purposes.

2. A valve construction comprising a casing havin inlet and outlet ports therein, and provi ed with a partition therein havinga circular opening forming a valve seat the wall surrounding said circular opening being provided with projectin lugs extendinwardly thereof to provi e guide ways,

1n a etachable cap member in said casing, a

bonnet structure in said casing, a valve member including. projecting ortions adapted for engagement in said gui e ways, whereby the same is reciprocated intermelib diate said seat and said detachable cap, and

valve regulating means in said bonnet.

3. Avalve construction comprising a casing provided with an annular valve seat therein, avalve member for coo eration on said seat, a main stem adjusta le in said casing to permit the valve to act as a check valve or for lifting said valve member 0d" its seat, an auxiliary stem reciprocable in said main stem and adapted to be detachably connected to said valve member, said mam and auxiliary stems adapted for 00- acting to lock said valve member in closed position in said casin when the auxiliary stem. is connectedto t e valve member.

A. A valve construction, comprisin a casing, a valve member in said casing aving a "screw threaded socket, a bonnet on sald casing having a screw threaded 0 ening therein, a hollow main stem ada to for adjustably en aging the screw t readed portion of sai bonnet, said main stem separate from said valve member and having an enlarged head on one end thereof adapted for seating against said bonnet to provide a leak proof structure and havin in said end interior screw threads, an auxillary stem adapted for reciprocation within said main stem, said auxiliary stem having inner end thereof provided with screw threads adapted to engage in the screw threaded portion of said main stem to lock said stems together, said-screw threaded portion of the the auxilia stem likewise adapted for engagement in t e screw threaded socket of said valve member, and means on id main and auxiliary stems, whereby lllb 10 ed opening of said bonnet, said main stem adapted to be adjusted upwardly whereby to 11ft the valve member off its seat in said casing or to be adjusted in said bonnet whereb the valve may coact in the casin as a c eck valve, an auxiliary stem sli ably mounted in the main stem, and means for detachable connection of the auxiliary stem to said valve.

ROBERT A. HERA. 

